/Engine/Source/Editor/UnrealEd/Public/ComponentTypeRegistry.h
Called when the user changes the text in the search box.  Pointer that will be set to the (globally shared) component type list
Deleate that can be used to handle change notifications. change notifications are raised when entries are added or removed from the component type list
FOnComponentTypeListChanged & SubscribeToComponentList ( [TArray](API\Runtime\Core\Containers\TArray)< FComponentClassComboEntryPtr > *& OutComponentList )